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([2620:10d:c090:180::1:18c3]) by smtp.gmail.com with ESMTPSA id f21sm17889805pfa.106.2018.05.01.09.12.35 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 01 May 2018 09:12:37 -0700 (PDT) Subject: Re: INFO: task hung in wb_shutdown (2) To: Tetsuo Handa , Jan Kara , Tejun Heo Cc: syzbot , christophe.jaillet@wanadoo.fr, LKML , linux-mm , syzkaller-bugs@googlegroups.com, weiping zhang , Linus Torvalds , Andrew Morton , Dmitry Vyukov , linux-block@vger.kernel.org References: <94eb2c05b2d83650030568cc8bd9@google.com> <43302799-1c50-4cab-b974-9fe1ca584813@I-love.SAKURA.ne.jp> From: Jens Axboe Message-ID: <16c2860a-05db-9534-5960-e26c9ba9214c@kernel.dk> Date: Tue, 1 May 2018 10:12:34 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.0 MIME-Version: 1.0 In-Reply-To: <43302799-1c50-4cab-b974-9fe1ca584813@I-love.SAKURA.ne.jp> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 5/1/18 4:27 AM, Tetsuo Handa wrote: > Tejun, Jan, Jens, > > Can you review this patch? syzbot has hit this bug for nearly 4000 times but > is still unable to find a reproducer. Therefore, the only way to test would be > to apply this patch upstream and test whether the problem is solved. I'll review it today. -- Jens Axboe